Convert text to binary and the other way for any string input.
Convert text to hexadecimal and the other way for any string input.
Convert text to decimal and the other way for any string input.
Convert text to octal and the other way for any string input.
Check for 301 & 302 redirects of a specific URL. It will check for up to 10 redirects.
Use the Google translator API to generate text to speech audio.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Make sure your passwords are good enough.
Check if the URL is cached or not by Google.
Generate a random number between a given range.